CN209767363U - Linear motor based on solid-state buffer material damping - Google Patents

Abstract

The utility model relates to a linear motor based on solid-state buffer material damping belongs to the semiconductor field of making. The motor consists of an upper shell assembly, a rotor assembly and a lower shell assembly; the upper shell assembly comprises an upper shell and two limiting blocks; the rotor assembly comprises a baffle, a balancing weight, two solid buffer material structures, two springs, two limiting glues and a magnet assembly; the lower case assembly includes a lower case, an FPC, and a coil. The utility model discloses a linear motor suppresses the inside vibration of motor from the aspect of solid buffer material damping, and the vibration of effective control active cell subassembly reduces the motor risk of becoming invalid.

Description

Linear motor based on solid-state buffer material damping

Technical Field

The utility model belongs to the semiconductor manufacturing field relates to an use solid-state buffer material as damped linear motor.

background

The linear vibration element needs a certain damping to limit the motion amplitude of the mover when the mover vibrates, and if the damping is not provided, the following problems exist: (1) the amplitude is too large, so that the compression amount of the spring is large, the stress of the spring rises, the risk of spring deformation or spring fracture is easily caused, and the product fails; (2) the vibration amplitude is too large, so that the rotor assembly collides with the inner part of the upper shell assembly to generate noise, and the experience effect is influenced; (3) the stopping speed is slow, and after the motor stops electrifying, the rotor assembly cannot be quickly stopped under the driving of inertia, so that the touch experience is influenced;

The damping mode that the linear vibration motor of present conventional product adopted adds magnetic fluid in the clearance of active cell subassembly and upper casing subassembly, and magnetic fluid has certain magnetism and viscosity, can play certain damping effect when the active cell moves, but magnetic fluid has several fatal problem points: (1) the magnetic fluid has extremely strong temperature sensitivity, and the damping effect of the magnetic fluid at normal temperature is very different from the damping effect of the magnetic fluid at high and low temperature. At high temperature, the viscosity of the magnetic fluid is sharply reduced along with the temperature, and when the temperature is increased by 10-15 ℃, the viscosity of the magnetic fluid is reduced by one time, so that the damping effect is invalid, the spring is deformed, broken or noisy, and the use experience is greatly influenced; at low temperature, the viscosity of the magnetic fluid rises sharply along with the temperature, and when the temperature is reduced by 10-15 ℃, the viscosity of the magnetic fluid is doubled, so that the damping rises sharply, the motor cannot vibrate due to too large damping, and the effect of vibration experience is lost. (2) The difficulty of adding the magnetic fluid is high, the consistency of the adding amount is not easy to control, repeated adding or absorption is needed, and the consistency of the product is poor; (3) the magnetic fluid is in a liquid state, and the product can run off or be reduced after various falling destructive tests and the like, so that the damping effect is reduced, and the quality of the product is influenced; (4) the magnetic fluid is expensive, resulting in an increase in product cost.

Therefore, in order to overcome the above disadvantages, a linear motor product that can effectively suppress the vibration of the mover assembly and has a low cost is needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a linear motor based on magnetic damping and solid-state buffer material damping, which suppresses the internal vibration of the motor from the aspect of the solid-state buffer material damping, effectively controls the vibration of the mover assembly, and reduces the risk of motor failure.

in order to achieve the above purpose, the utility model provides a following technical scheme:

A linear motor based on solid buffer material damping is composed of an upper shell assembly (1), a rotor assembly (2) and a lower shell assembly (3); the rotor assembly comprises a baffle (201), a balancing weight (202), two solid buffer material structures (203), two springs (204), two limiting rubbers (205) and a magnet assembly (206); the balancing weight (202) and the baffle (201) are welded by laser; the two springs (204) are welded on the left side and the right side of the balancing weight (202) through laser; two solid buffer material structures (203) are positioned at the diagonal of the upper shell; the two limiting rubbers (205) are respectively bonded on the left side and the right side of the balancing weight (202) through self-carried back rubbers; the magnet assembly (206) is bonded with the balancing weight (202) and the baffle (201) through glue;

the spring of the rotor component and the inner wall of the upper casing component are welded by laser, the rotor component moves left and right in the upper casing component by utilizing the elasticity and the natural frequency of the spring, a solid buffer material structure is attached between the inner wall of the upper casing component and the position of the R corner of the spring, the solid buffer material structure is attached to the inner wall of the upper casing through self-carried gum, then the upper casing component and the lower casing component are covered, and the upper casing component and the lower casing component are welded and fixed by laser; when the rotor assembly moves, the spring compresses the solid buffer material structure to form damping, and excessive vibration amplitude of the rotor assembly is restrained.

Further, the upper shell assembly comprises an upper shell (101) and two limit blocks (102); the two limit blocks (102) are respectively welded on the left side and the right side in the upper shell through laser.

Further, the lower case assembly includes a lower case (303), an FPC (302), and a coil (301); the FPC (302) is pasted on the upper shell (101) through self-adhesive, the coil (301) is pasted on the FPC (302) through glue, a coil wire head is welded with a PAD on the FPC through electronic welding, and the other two PADs on the FPC are used for supplying power to the coil.

When the mover moves to a certain position, the power supply direction of the coil changes, so that the mover assembly moves in the opposite direction, and the mover moves in a reciprocating manner; the counterweight on the rotor component is made of high-density alloy and has a certain weight, and the reciprocating rotor generates vibration inductance under a certain motion amplitude and power supply frequency.

further, the limiting block (102) is made of a metal rigid material.

Further, the limiting rubber (205) is made of a buffer material.

Further, the spring (204) is a spring piece with a U-shaped structure.

The beneficial effects of the utility model reside in that:

(1) The solid buffer material adopted by the utility model is solid, has strong stability, does not have the temperature sensitivity problem of magnetic fluid, has consistent normal temperature, high temperature and low temperature performance and good product stability;

(2) The solid buffer material adopted by the utility model has strong machinability, can be processed into various shapes according to the requirements, ensures the processing precision and has high product consistency;

(3) the solid buffer material adopted by the utility model is pasted on the inner wall of the upper casing through the gum, and can not run off or reduce like liquid after various destructive tests such as falling, and the product reliability is strong;

(4) The magnetic conduction plate and the solid buffer material structure adopted by the utility model are general materials, the price is low, and the cost can be effectively saved;

(5) The utility model discloses an upper case subassembly is interior to have the stopper, and the stopper is the metal rigidity material, and the corresponding opposite at the stopper has spacing glue, and spacing glue is for buffering the material, and too big or in the destructive test such as falling when supply voltage, when the damping is not enough to resist the impact, spacing glue and stopper bump, can effectually stop spring deformation, fracture or noise formation, and stopper spacing gluey mechanism, solid-state buffer material damping form dual guarantee.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

for the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the linear motor of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the linear motor according to the present invention;

fig. 3 is a schematic perspective view of the linear motor of the present invention;

Fig. 4 is a schematic plan view of the linear motor of the present invention;

Reference numerals: 1-upper shell component, 2-electronic component, 3-lower shell component, 101-upper shell, 102-limiting block, 201-baffle, 202-balancing weight, 203-solid buffer material structure, 204-spring, 205-limiting glue, 206-magnet component, 301-coil, 302-FPC, 303-lower shell.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

referring to fig. 1 to 4, a linear motor based on solid buffer damping is disclosed, which comprises an upper housing assembly 1, a mover assembly 2 and a lower housing assembly 3. The spring of the rotor component and the inner wall of the upper casing component are welded by laser, the rotor component moves left and right in the upper casing component by utilizing the elasticity and the natural frequency of the spring, a solid buffer material structure is attached between the inner wall of the upper casing component and the position of the R corner of the spring, the solid buffer material structure is attached to the inner wall of the upper casing through self-carried gum, then the upper casing component and the lower casing component are covered, and the upper casing component and the lower casing component are welded and fixed through laser. When the rotor assembly moves, the spring compresses the solid buffer material structure to form damping, and the excessive amplitude of the rotor assembly is restrained.

the upper shell assembly comprises an upper shell 101 and two limit blocks 102; the two limit blocks 102 are respectively welded on the left side and the right side in the upper casing through laser.

The rotor assembly comprises a baffle 201, a balancing weight 202, two solid buffer material structures 203, two springs 204, two limiting rubbers 205 and a magnet assembly 206; the counterweight block 202 and the baffle 201 are welded by laser; the two springs 204 are welded on the left side and the right side of the balancing weight 202 through laser; the two limiting rubbers 205 are respectively bonded on the left side and the right side of the balancing weight 202 through self-carrying back rubbers; two solid buffer material structures 203 are located at the diagonal of the upper housing; the magnet assembly 206 is bonded to the weight 202 and the baffle 201 by glue. The spring 204 is a spring plate with a U-shaped structure.

The lower chassis assembly includes a lower chassis 303, a Flexible Printed Circuit Board (FPC) 302, and a coil 301; the FPC 302 is pasted on the upper shell 101 through self-adhesive, the coil 301 is pasted on the FPC 302 through glue, the coil wire ends are welded with PADs on the FPC through electronic welding, and the other two PADs on the FPC are used for supplying power to the coil.

The linear motor is a vibrating element and plays a role in reminding or specific touch experience, the coil generates electromagnetic force by supplying alternating current with fixed frequency to the PAD position on the FPC, the electromagnetic force generated by the coil interacts with magnetic lines generated by the magnet assembly, so that the rotor assembly moves towards one direction, and after the rotor moves to a certain position, the power supply direction of the coil changes, so that the rotor assembly moves towards the opposite direction, and the rotor assembly reciprocates in this way; the counterweight on the rotor component is made of high-density alloy and has a certain weight, and the reciprocating rotor generates vibration inductance under a certain motion amplitude and power supply frequency. The vibration motor is arranged in electronic elements such as a mobile phone and the like, and plays a role in reminding an incoming call or specifically vibrating.

Be provided with the stopper in the upper casing subassembly, the stopper is the metal rigidity material, and what correspond is provided with spacing glue in the opposite of stopper, and spacing glue is for buffering the material, and when supply voltage is too big or in destructive tests such as falling, when the damping is not enough to resist the impact, spacing glue and stopper buffering collision can effectually stop spring deformation, fracture or noise formation, and stopper spacing gluey mechanism, solid-state buffer material damping form triple guarantee.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (6)

1. A linear motor based on solid buffer material damping is characterized in that the motor is composed of an upper shell assembly (1), a rotor assembly (2) and a lower shell assembly (3); the rotor assembly comprises a baffle (201), a balancing weight (202), two solid buffer material structures (203), two springs (204), two limiting rubbers (205) and a magnet assembly (206); the balancing weight (202) and the baffle (201) are welded by laser; the two springs (204) are welded on the left side and the right side of the balancing weight (202) through laser; two solid buffer material structures (203) are positioned at the diagonal of the upper shell; the two limiting rubbers (205) are respectively bonded on the left side and the right side of the balancing weight (202) through self-carried back rubbers; the magnet assembly (206) is bonded with the balancing weight (202) and the baffle (201) through glue;

The spring of the rotor component and the inner wall of the upper casing component are welded by laser, the rotor component moves left and right in the upper casing component by utilizing the elasticity and the natural frequency of the spring, a solid buffer material structure is attached between the inner wall of the upper casing component and the position of the R corner of the spring, the solid buffer material structure is attached to the inner wall of the upper casing through self-carried gum, then the upper casing component and the lower casing component are covered, and the upper casing component and the lower casing component are welded and fixed by laser; when the rotor assembly moves, the spring compresses the solid buffer material structure to form damping, and excessive vibration amplitude of the rotor assembly is restrained.

2. A linear motor based on solid state buffer material damping according to claim 1, characterized in that the upper housing assembly comprises an upper housing (101) and two stoppers (102); the two limit blocks (102) are respectively welded on the left side and the right side in the upper shell through laser.

3. A linear motor based on solid state buffer material damping according to claim 2, characterized in that the lower casing assembly comprises a lower casing (303), an FPC (302) and a coil (301); the FPC (302) is pasted on the upper shell (101) through self-adhesive, the coil (301) is pasted on the FPC (302) through glue, a coil wire head is welded with a PAD on the FPC through electronic welding, and the other two PADs on the FPC are used for supplying power to the coil.

4. a linear motor based on solid state buffer material damping according to claim 2, characterized in that the stopper (102) is a metal rigid material.

5. The linear motor based on solid state buffer material damping as claimed in claim 1, wherein said limit stop (205) is a buffer material.

6. A linear motor based on solid state buffer damping as claimed in claim 1, wherein the spring (204) is a leaf spring of U-shaped configuration.